David Morse, Sophie Okonedo to Co-Star in CBS' Wall Street Drama

They join the pilot executive produced by John Cusack, starring Charlie Cox and Maggie Grace.

CBS is rounding out the cast for its untitled Wall Street pilot.

Treme's David Morse and Hotel Rwanda Oscar nominee Sophie Okonedo have been tapped to co-star in the drama from executive producer John Cusack, The Hollywood Reporter has learned.

From Justified writers Taylor Elmore and Ben Cavell, the drama is set in the world of Wall Street money and power. Boardwalk Empire's Charlie Cox toplines the drama as Jackson, a smart and sophisticated Wall Street hedge fund trader who served his country in Iraq and has the integrity and desire to do good. Lost'sMaggie Grace also co-stars.

Morse will play Conklin, a Master of the Universe-type guy who is powerful and authoritative behind a confident geniality. He's a hedge fund genius who is worth billions and is always planning his next move to consolidate his power and wealth.

Okonedo will play Bryce, a woman deeply committed to her work who serves as an assistant attorney general charged with heading a task force investigating Wall Street.

Morse recently wrapped HBO's critical darling Treme and earned Emmy nominations for his supporting turn in John Adams and guest role on Fox's House. He's repped by UTA, Kipperman and Katz Golden.

Okonedo, repped by Hamilton Hodell in the U.K. and UTA, counts After Earth, For Better or for Worse and Aeon Flux among her big-screen credits. Her TV roles include The Escape Artist, Mayday, The Slap, Doctor Who and Criminal Justice.

The drama is based on an original story from Elmore, Cavell, Cusack and Kevin McCabe. Elmore and Cavell penned the teleplay for the CBS Television Studios pilot. Justified's Sarah Timberman and Carl Beverly will executive produce. Niels Arden Oplev will exec produce and direct the pilot.